代码如下：
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#!/usr/bin/env python3 import argparse def cmd1Get(args): print("cmd1 get") print(args) def cmd2Set(args): print("cmd2 set") print(args) parser = argparse.ArgumentParser() subparser = parser.add_subparsers(dest="subcmd", title="subcmd") cmd1 = subparser.add_parser("cmd1", help="cmd1 help") cmd2 = subparser.add_parser("cmd2", help="cmd2 help") sub_subparser = cmd1.add_subparsers(dest="subsubcmd", title="subsubcmd") get = sub_subparser.add_parser("get", help="op get") get.set_defaults(func=cmd1Get) sub_subparser = cmd2.add_subparsers(dest="subsubcmd", title="subsubcmd") set = sub_subparser.add_parser("set", help="op set") set.set_defaults(func=cmd2Set) get.add_argument("--id", help="ID", type=str, required=True) set.add_argument("--id", help="ID", type=str, required=True) args = parser.parse_args() if not args.subcmd: parser.print_help() elif not args.subsubcmd: subparser.choices[args.subcmd].print_help() # 输出子命令的帮助 else: args.func(args) |
可用子命令：
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$ ./cmd.py -h usage: cmd.py [-h] {cmd1,cmd2} ... optional arguments: -h, --help show this help message and exit subcmd: {cmd1,cmd2} cmd1 cmd1 help cmd2 cmd2 help |
子命令的可用子命令
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$ ./cmd.py cmd1 -h usage: cmd.py cmd1 [-h] {get} ... optional arguments: -h, --help show this help message and exit subsubcmd: {get} get op get |
子命令的子命令的帮助
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$ ./cmd.py cmd1 get -h usage: cmd.py cmd1 get [-h] --id ID optional arguments: -h, --help show this help message and exit --id ID ID |
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